Power-transmitting mechanism.



No. 694,692. Pa tented Mar. 4, I902.

H. w; SUMNER. POWER TRANSMITTING MECHANISM.

(Ap plicaticm filedDec. 1a, 1901.)-

(No Model.) 3 Sheets-Sheet l.

46777208563. liwenivr.

No. 694,692. I Patented Mar. 4, I902.

H. W. SUMNER.

POWER TRANSMITTING MECHANISM.

(Applicatioxi filed. Dec. 13, 1901. (No Model.) I 3 sheets sheet 2.

40z'i7zesses. Inverzfar.

m: uoams PETERS m. PHOTOLITHQ, WASHINGTON. f: c.

No. 694,692. Patented Mar. 4, I902.

- H. W. SUMNER.

POWER TRANSMITTING MECHANISM.

(Applicatiqn filed Dec. 13, 1901.) (No Model.)

UNITED STATES PATENT OFFICE.

HARRY W. SUMNER, OF CINCINNATI, OHIO, ASSIGNOR TO THE LUNKEN- HEIMER COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

PQWEu-TRKN MITTING M ECHANlSM.

SPECIFICATION forming part of Letters Patent No. 694,692, dated March 4, 1902.

' Application filed December 18,1901. Serial No. 85,830. (in model.)

To all whom Entity concern.- I Be it known that I I-IARRY W. SUMNER, a citizen of the United States, residing at Ci'n-' cinnati, in the county of'Hamilton and State.

of Ohio, have invented certain new and useful Improvements in Transmitting Mechan ism, of which the following is a'full, clear, and exact description,reference'being had to the'accompanyin g drawings, forming part of this specification.

My invention relates to mechanism for transmitting power and speed from a driving to a driven shaft, and more particularly for use in the driving-gears of motor -vehicles; and it has for its object the improved eonstruction of such transmitting mechanism whereby the speed can be increased or de-1 creased and its direction of revolution changed at the will of the operator, the whole being accomplishedby mechanism which is exceedingly simple in construction and efli-' cient in action.

The novelty of my invention will be hereinafter more fully set forth, and specifically pointed out in the claims. v

In the accompanying drawings, Figure 1, Sheet 1, is a sectional elevation on the axis of the driving mechanism. Fig. 2, Sheet 1,

is a broken end elevation on the dotted line resenting a modification in the construction.

Fig. 4:, Sheet 2, is a broken end elevation on the dotted line 2 y of Fig. 3 looking to the left. ing to Figs. 1 and 3, but showing astill further modification in the construction. Fig. 6, Sheet 3, is a broken end elevation looking to the left of Fig. 5 with the end plate of the drum or casing removed.

The same letters of reference are used to indicate indentical parts in all the figures.

Referring now particularly to Figs. 1 and 2, A represents the driving-shaft-say, for instance, the crank-shaft of a gasolene-engine or other similar motorvof an automobile and having a constant direction of revolution indicated by the arrows. Assuming Fig. 1 to be a view looking toward the rear of the vehicle and that the driven axle or shaft of the sameis in the rear of the shaft A, there Fig. 5, Sheet 3, is a view correspond-' is mounted loosely upon said shaft upon the right a drum 13, whose outer face is a removable head C, having a hub a bearing upon the axle, and whose inner face forms an exterior clutch member b, with an internal beveled periphery, as seen at 0. Within the drum B and bearing against its inner head d is a disk' D,'having integral therewith or made fast upon asleeve E, with its bearing upon the axle A and loose thereon, said sleeve passing through'a perforation in the inner head 02 of the drum. Likewise loose upon the sleeve E and having its bearing upon the same is a sleeve F, having integral therewith or made fast thereon a sprocket-wheel G. The interior face of the drum B, between the disk D and head C, is an unbroken spur-gear H, forming an internal gear for the drum, and with this gear meshes a pinion I, carried by and pivoted upon the disk D. The pinion I meshes with a spur-gear J, keyed or otherwise fast upon the shaft A and located between the disk Dand head C.

Feathered'uponthe sleeve F is the internal disk member of a clutch K, adapted to be engaged and be disengaged from the clutchsurface 0 of the drum B, after a well-known manner of friction-clutches, and to slide the clutch memberK to effect its engagement and disengagement it is provided with a hub e,

having a circumferential groove with which a fork-shifterf engages in the usual or any suitable manner.

7 On the left of the drum B is an external clutch-diskL, keyed or otherwise made fast upon the sleeve E, and, like the opposing internal clutch K, there .is an internal clutch M feathered upon the sleeve F and adapted to be engaged with or disengaged from the clutch-disk L by means of a circumferentiallygrooved hub g and any suitable shifter h engaging therewith. t

Any suitable brake mechanism N, which may be a shoe-brakeor band-brake and under control of the operator, is used in connection with the clutch-disk L to loose or lock the same, and similar brake mechanism 0 is used in connection with the drumB for the same purpose.

Assuming that the sprocket-wheel G is connected bya drive-chain with asimilar sprocketwheel upon the axle orshaft to be driven and assuming the brakeN to be engaged with the disk L to lock the same, its clutch M being disengaged and the opposite clutch K engaged with the drum B, while its brake mechanism O is disengaged from said drum, the operation of the parts is as follows: The shaft A, as indicated by the arrows, has a constant revolution in one direction, in this instance forward, and the disk being locked or held from rotation the sleeve E and disk D are likewise locked and held from rotation. The gear J constantly rotates with the shaft A,and the pinion I, being held at fixed points within the drum B,which is loose from its brake mechanism, motion is imparted to said drum to cause it to revolve in the direction indicated by the arrow in Fig. 2, which is a direction opposite to that of the rotation of the shaft A and at a much diminished speedin fact, the minimum speed intended to be given to the sprocket-wheel G. The clutch K being locked to the drum B, the sleeve E and the sprocketwheel G are likewise locked to the drum and partake ofits direction and speed of rotation, and this imparts a backward rotation to the driven shaft and, we assume, a backward motion to the vehicle or automobile driven by said shaft and at its lowest rate of speed. Now assuming that it is desired to give the vehicle an opposite or forward direction of movement and at the same low rate of speed, it is only necessary to release the clutch K, brake'mechanism N, and to throw into engagement the clutch L M and apply the brake mechanism O to the drum B. Under this adjustment the drum B is held from rotation and the pinion I is given a planetary rotation around the pinion J and necessarily around the shaft A, thereby putting the disk Dunder rotation, and with it the sleeve E, which having the clutch members L M locked to it and to the sleeveF and sprocket-wheel Gimparts a relatively slow forward rotation to the sprocket-wheel G and a consequently slow forward movement to the vehicle, just the 0pposite of that described under the adjustment illustrated in Fig. 1. Now to impart a rapid or the same rate of speed to the sprocketwheel G as that given the shaft A and in the same direction, or, in other words, to lock the sprocket-wheel G to theshaft A, all that is necessary is to throw off both the brakes and throw into engagement both the clutches, whereby, the disk D being locked to the sprocket-wheel through its sleeve and the medium of the clutches L M and the drum B being locked to the sprocket-Wheel G through the medium of the clutch K, the disk D and drum B must necessarily be locked to each other, and consequently there can be no movement between the pinion I and internal gear H, and on account of the parts being so locked together they must necessarily revolve with the shaft A and at the same rate of speed, thereby imparting a fast forward motion to the sprocket-wheel G, and in consequence imparting a fast forward motion to the vehicle.

By the foregoing simple mechanism, which is not at all liable to breakage or disarrangement, I am enabled to obtain for the vehicle a slow forward and slow backward movement and a rapid forward movement.

In the remaining figures the construction is identical, except at the drum end of the apparatus.

Referring now to Figs. 3 and 4, the internal gear H in the drum is dispensed with, and the disk D, which corresponds to the disk D, before described, is itself a spur-gear P, meshing with a small pinion Q, forming part of a pair of cone-gears whose larger pinion R meshes with the gear J, fast on the shaft A. The cone-gears Q R are pivoted, as at 1', in the heads d0 of the drum B. The manipulation and mode of operation of the parts are identical with that described for the construction of Figs. 1 and 2, except that the drum 13 instead ofbeing locked to the gear J through the medium of an internal gear is locked thereto through the medium of the cone-gears Q, R and their pivots i), as will be readily understood.

In Figs. 5 and 6 the disk corresponding to the disk D of Figs. 1 and 2 is an internal bevelgear D with which mesh two or more beveled pinions S, journaled at an angle to blocks upon the interior of the head C and which mesh with a beveled gear 7' fast upon the shaft A and corresponding to the gear J of Figs. 1 and 2. Under this construction the manipulation and mode of operation of the parts are identical with that described for the construction of Figs. 1 and 2 and 3 and 4.

While I have illustrated the driving-gear G as a sprocket-wheel, it is of course to be understood that the same may be a spur or any other kind of a gear ora belt-pulley for properly transmitting the driving motion to the driven shaft.

Having thus fully described my invention, I claim- 1. In transmitting mechanism of the char acter described, the combination of a shaft revolving in one direction, a clutch member loose upon said shaft, a disk provided with a sleeve likewise loose upon said shaft and adjacent to the foregoing clutch member, a gear fast upon said shaft, a gear intermediate of said disk and clutch member and engaging the last-named gear, a second clutch member fast upon the sleeve of said disk, a second sleeve loose upon the first-mentioned sleeve, a driving-gear carried by said second sleeve, independently operated clutches feathered on said second sleeve for engagement and disengagement with said clutch members, mechanism for actuating said clutches, and brake mechanism for the said clutch members.

2. In transmitting mechanism of the character described, the combination of a shaft revolving in one direction, a drum -cluteh disk, a second sleeve loose upon the first- Q mentioned sleeve, a driving-gear carried by said second sleeve, independently operated clutches feathered on said sleeve for engage ment and disengagement With said drumclutch and clutch member respectively, mechanism for actuating said clutches, and brake mechanism for said drum-clutch and clutch member, substantially as described.

HARRY W. SUMNER.

Witnesses:

EDWARD PEoK, Gus. G; HAMPSON. 

